12-16-2008, 08:45 AM
progesterone and oestrogen are the main hormones used to reduce human fertility whereas LH and FSH are used to promote it. All of which are found naturally in the body.There has been many links between the contraceptive pill, which contains progesterone and oestrogen, with cancer. However, without oestrogen in the body, which occurs during the menopause, osteoperosis is more likely to occur as the blood-calcium levels are increased so the bone-calcium levels are decreased.LH and FSH cause the production and release of the follicles into the fallopian tube, so when this is increase more eggs are released making the probability of pregnancy much higher. However, this does run the risk of more then one follicle being fertilised. If many are then some will have to be removed to preserve the mothers health. This can stimulate many ethical arguments about right to life for the unborn child.Hope this gets you started
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